Change TaskStatus.timestamp to Date

CHANGELOG.md

@@ -5,8 +5,10 @@
 Not yet released.
 
 - Support creating a service without specifying a name ([891][] Allow `ServiceSpec.name` to be nullable)
+- Change `TaskStatus.timestamp` from `String` to `Date` ([895][])
 
 [891]: https://github.com/spotify/docker-client/pull/891
+[895]: https://github.com/spotify/docker-client/pull/895
 
 ## 8.8.5
 

src/main/java/com/spotify/docker/client/messages/swarm/TaskStatus.java

@@ -28,6 +28,7 @@
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.google.auto.value.AutoValue;
 
+import java.util.Date;
 import javax.annotation.Nullable;
 
 @AutoValue
@@ -49,7 +50,7 @@ public abstract class TaskStatus {
   public static final String TASK_STATE_REJECTED = "rejected";
 
   @JsonProperty("Timestamp")
-  public abstract String timestamp();
+  public abstract Date timestamp();
 
   @JsonProperty("State")
   public abstract String state();
@@ -66,7 +67,7 @@ public abstract class TaskStatus {
 
   @JsonCreator
   static TaskStatus create(
-      @JsonProperty("Timestamp") final String timestamp,
+      @JsonProperty("Timestamp") final Date timestamp,
       @JsonProperty("State") final String state,
       @JsonProperty("Message") final String message,
       @JsonProperty("Err") final String err,